CN202648495U - Flat tube for preventing welding blockage and micro-channel heat exchanger with flat tube - Google Patents
Flat tube for preventing welding blockage and micro-channel heat exchanger with flat tube Download PDFInfo
- Publication number
- CN202648495U CN202648495U CN 201220226009 CN201220226009U CN202648495U CN 202648495 U CN202648495 U CN 202648495U CN 201220226009 CN201220226009 CN 201220226009 CN 201220226009 U CN201220226009 U CN 201220226009U CN 202648495 U CN202648495 U CN 202648495U
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- flat tube
- stria
- prevents
- heat exchanger
- welding
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Abstract
The utility model discloses a flat tube for preventing welding blockage and a micro-channel heat exchanger with the flat tube. A flat tube hole running through two ends of the flat tube is formed in the flat tube, two ends of the flat tube are inserted into collecting holes of a collecting main and are welded and fixed with the collecting main; and the parts of the flat tube, which are inserted into the collecting holes, are provided with thin grooves for blocking, absorbing and storing solder materials along the outer surface of the flat tube. According to the flat tube, the welding blockage rate of the flat tube can be reduced, therefore, the side pressure loss of a refrigerant of the micro-channel heat exchanger is lowered, and the energy efficiency of the heat exchanger and a heat exchange system is increased.
Description
Technical field
The utility model relates to micro-channel heat exchanger.
Background technology
Such as Fig. 1, Fig. 2 and shown in Figure 3, flat tube 1 of the prior art: insert header 2 flow concentration holes 21 parts and have smooth outer surface.
When welding, scolder under capillarity, welds flat tube and header by the slit of flat tube and header; In some situation, scolder can pass through the slit of flat tube and header, flow to some flat pipe hole 11, causes flat pipe hole to stop up 3.
Flat pipe hole is used for the cold-producing medium that circulates, and the flat pipe hole of the obstruction cold-producing medium that can not circulate causes this flat pipe hole to lose efficacy; And causing the heat exchanger refrigerant side pressure loss to become large, system energy efficiency reduces.The interior flat tube eyelet welding of industry is stifled to be general phenomenon, and more serious plugging rate is 20%, and the acceptable plugging rate is below 5%.
The utility model content
Technical problem to be solved in the utility model just provides a kind of flat tube that prevents from welding obstruction, by the simple architecture advances of flat tube, avoids the flat tube eyelet welding to block up phenomenon.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: a kind of flat tube that prevents from welding obstruction, be provided with the flat pipe hole that traverses the flat tube two ends in the flat tube, the flat tube two ends are inserted in the header flow concentration hole and with header and are welded and fixed, and it is characterized in that: described flat tube inserts the flow concentration hole part is provided with blocking-up, receives and stores scolder along the flat tube outer surface stria.
As preferably, described stria is whole circumferentially around the flat tube outside, perhaps at least two sections of stria settings and on the flat tube external circumferential interval arrange, perhaps stria only has one section and be arranged at flat tube external circumferential part position.
As preferably, described stria is not less than 1mm from the distance of flat tube end face.
As preferably, described stria is not less than 2mm from the distance of flat tube end face.
As preferably, described stria is not less than 0.5mm from the distance of flow concentration hole inwall.
As preferably, described stria is not less than 2mm from the distance of flow concentration hole inwall.
As preferably, the degree of depth of described stria is the 1/3-2/3 of flat tube wall thickness.
As preferably, the width of described stria is the 1/3-6 of flat tube wall thickness.
As preferably, the cross section of described stria is rectangle, triangle, trapezoidal or circular arc.
The utility model also provides a kind of micro-channel heat exchanger, it is characterized in that: described micro-channel heat exchanger uses above-mentioned flat tube.
The utility model flat tube inserts the flow concentration hole part is provided with blocking-up, receives and stores scolder along the flat tube outer surface stria, thereby can reduce the stifled rate of flat tube eyelet welding, thereby reduce the refrigerant side pressure loss of micro-channel heat exchanger, improve the efficiency of heat exchanger and heat-exchange system.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is further described:
Fig. 1 is flat tube and header syndeton schematic diagram in the prior art;
Fig. 2 is flat tube end construction schematic diagram in the prior art;
Fig. 3 is Fig. 1 partial structurtes schematic diagrames;
Fig. 4 is flat tube end construction schematic diagram (stria is whole circumferentially around the flat tube outside);
Fig. 5 is flat tube and header junction structural representation (stria is whole circumferentially around the flat tube outside);
Fig. 6 is flat tube end construction schematic diagram (stria only have one section and be arranged at flat tube external circumferential part position);
Fig. 7 is flat tube and header junction structural representation (stria only have one section and be arranged at flat tube external circumferential part position).
The specific embodiment
A kind of flat tube that prevents from welding obstruction, be provided with the flat pipe hole 11 that traverses the flat tube two ends in the flat tube 1, the flat tube two ends are inserted in header 2 flow concentration holes 21 and with header and are welded and fixed, and described flat tube inserts the flow concentration hole part is provided with blocking-up, receives and stores scolder along the flat tube outer surface stria 12.In addition, micro-channel heat exchanger uses above-mentioned flat tube.
In conjunction with Fig. 4 and Fig. 5 embodiment 1 of the present utility model is described, described stria is whole circumferentially around the flat tube outside.Described stria is not less than 1mm from the distance of flat tube end face.Described stria is not less than 0.5mm from the distance of flow concentration hole inwall.The degree of depth of described stria is the 1/3-2/3 of flat tube wall thickness.The width of described stria is the 1/3-6 of flat tube wall thickness.The cross section of described stria is rectangle, triangle, trapezoidal or circular arc.
In conjunction with Fig. 6 and Fig. 7 embodiment 2 of the present utility model is described, it is from the different of embodiment 1, and stria only has one section and be arranged at flat tube external circumferential part position.Described stria is not less than 2mm (distance is little, does not have blocking effect) from the distance of flat tube end face.Described stria is not less than 2mm from the distance of flow concentration hole inwall, and (distance is little, easily causes flat tube and header weld seam failure welding; Small stria and the weldering of (flat tube and header) seam are fought for scolder and are caused).The degree of depth of stria is generally 0.1-0.3mm; The width of stria is generally 0.1-3mm.
As the distortion of above-described embodiment, at least two sections of described stria settings and interval setting on the flat tube external circumferential.The cross section of stria also can be other any shape; This small stria can be realized by the mode of machine cut.
Claims (10)
1. flat tube that prevents from welding obstruction, be provided with the flat pipe hole (11) that traverses the flat tube two ends in the flat tube (1), the flat tube two ends are inserted in header (2) flow concentration hole (21) and with header and are welded and fixed, and it is characterized in that: described flat tube inserts the flow concentration hole part is provided with blocking-up, receives and stores scolder along the flat tube outer surface stria (12).
2. a kind of flat tube that prevents from welding obstruction according to claim 1, it is characterized in that: described stria is whole circumferentially around the flat tube outside, perhaps at least two sections of stria settings and on the flat tube external circumferential interval arrange, perhaps stria only has one section and be arranged at flat tube external circumferential part position.
3. a kind of flat tube that prevents from welding obstruction according to claim 2, it is characterized in that: described stria is not less than 1mm from the distance of flat tube end face.
4. a kind of flat tube that prevents from welding obstruction according to claim 3, it is characterized in that: described stria is not less than 2mm from the distance of flat tube end face.
5. a kind of flat tube that prevents from welding obstruction according to claim 4, it is characterized in that: described stria is not less than 0.5mm from the distance of flow concentration hole inwall.
6. a kind of flat tube that prevents from welding obstruction according to claim 5, it is characterized in that: described stria is not less than 2mm from the distance of flow concentration hole inwall.
7. a kind of flat tube that prevents from welding obstruction according to claim 6, it is characterized in that: the degree of depth of described stria is the 1/3-2/3 of flat tube wall thickness.
8. a kind of flat tube that prevents from welding obstruction according to claim 7, it is characterized in that: the width of described stria is the 1/3-6 of flat tube wall thickness.
9. a kind of flat tube that prevents from welding obstruction according to claim 8, it is characterized in that: the cross section of described stria is rectangle, triangle, trapezoidal or circular arc.
10. micro-channel heat exchanger, it is characterized in that: described micro-channel heat exchanger right to use requires 1 described flat tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220226009 CN202648495U (en) | 2012-05-18 | 2012-05-18 | Flat tube for preventing welding blockage and micro-channel heat exchanger with flat tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220226009 CN202648495U (en) | 2012-05-18 | 2012-05-18 | Flat tube for preventing welding blockage and micro-channel heat exchanger with flat tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202648495U true CN202648495U (en) | 2013-01-02 |
Family
ID=47417592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220226009 Expired - Lifetime CN202648495U (en) | 2012-05-18 | 2012-05-18 | Flat tube for preventing welding blockage and micro-channel heat exchanger with flat tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202648495U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103453695A (en) * | 2013-09-07 | 2013-12-18 | 杭州蕴腾散热配件制造有限公司 | Micro-channel sterilization refrigerator special for vehicle air conditioner and manufacturing method of micro-channel sterilization refrigerator |
| CN104110995A (en) * | 2014-04-30 | 2014-10-22 | 美的集团股份有限公司 | Composite flat tube, parallel-flow heat exchanger and air conditioner |
-
2012
- 2012-05-18 CN CN 201220226009 patent/CN202648495U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103453695A (en) * | 2013-09-07 | 2013-12-18 | 杭州蕴腾散热配件制造有限公司 | Micro-channel sterilization refrigerator special for vehicle air conditioner and manufacturing method of micro-channel sterilization refrigerator |
| CN103453695B (en) * | 2013-09-07 | 2015-10-21 | 杭州蕴腾散热配件制造有限公司 | Air conditioning for automobiles special microchannel sterilization refrigerator and preparation method |
| CN104110995A (en) * | 2014-04-30 | 2014-10-22 | 美的集团股份有限公司 | Composite flat tube, parallel-flow heat exchanger and air conditioner |
| CN104110995B (en) * | 2014-04-30 | 2017-02-01 | 美的集团股份有限公司 | Composite flat tube, parallel-flow heat exchanger and air conditioner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130102 |